There may be. I'm pretty sure there are LOTS of folks who feel as you do about the 2 old geezers, however, 3rd party candidates never get enough votes in national elections to prevail. IMHO. They simply take votes away from the dominant parties.. 2/1/23

Of course. There is no statute limiting the election to only two candidates, and there have been 3rd and 4th and 5th party candidates in virtually every US presidential election. Have you forgotten about Jo Jorgensen, Gary Johnson, Jill Stein, Ralph Nader, H Ross Perot, etc.? Even if they don't get enough votes to score a single elector, they can still have a profound effect on the outcome. For example, if Trump wanted to win, he could probably do so easily if all he did was coax a couple independent candidates who attracted democratic voters in places like PA, MI, and OH, or FL, GA, and NC. Since the winner takes all in those states, and the margins are paper thin, and the states are heavily populated, just distracting 1-2% of democratic voters would give a 0.5%-1% boost, which would award most of those states, which would win the election. It's likely Jill Stein's doing that Trump won in 2016, even if she only captured a thousand or so votes in states where it mattered, it was enough to determine the outcome. With as old as these candidates are and as radical as everyone seems to be becoming, I think these candidates will potentially play a similar role in 2024. Or maybe DeSantis will take the GOP nom and Trump will run as a spoiler. In that case, the GOP might want to encourage someone like AOC to break off and run another spoiler to even the odds. But, as of yet, it looks like the democrats are too organized and have enough solidarity to prevent that from happening. A lot can change in the next year and a half, though.

The US has been a two-party system since its creation. History indicates that third-party candidates do not win presidential elections, even as often showing promise early on.

There always is... Do your research.